WO2009144564A3 - Détection de transitoires dans des signaux audio - Google Patents

Détection de transitoires dans des signaux audio Download PDF

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Publication number
WO2009144564A3
WO2009144564A3 PCT/IB2009/005737 IB2009005737W WO2009144564A3 WO 2009144564 A3 WO2009144564 A3 WO 2009144564A3 IB 2009005737 W IB2009005737 W IB 2009005737W WO 2009144564 A3 WO2009144564 A3 WO 2009144564A3
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WO
WIPO (PCT)
Prior art keywords
blocks
audio signal
segment
norm value
test criterion
Prior art date
Application number
PCT/IB2009/005737
Other languages
English (en)
Other versions
WO2009144564A2 (fr
Inventor
Yuli You
Original Assignee
Digital Rise Technology Co. Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Digital Rise Technology Co. Ltd. filed Critical Digital Rise Technology Co. Ltd.
Priority to CN2009801200286A priority Critical patent/CN102113050B/zh
Publication of WO2009144564A2 publication Critical patent/WO2009144564A2/fr
Publication of WO2009144564A3 publication Critical patent/WO2009144564A3/fr

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/002—Dynamic bit allocation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • G10L19/025—Detection of transients or attacks for time/frequency resolution switching
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/032—Quantisation or dequantisation of spectral components
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/26—Pre-filtering or post-filtering
    • G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L2019/0001—Codebooks

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

L'invention concerne, entre autres, des systèmes, des procédés et des techniques pour détecter l’existence d’un transitoire dans un signal audio. Selon un mode de réalisation représentatif, un segment d’un signal audio numérique est divisé en blocs et une valeur de norme est calculée pour chaque bloc parmi un certain nombre desdits blocs, ce qui donne un ensemble de valeurs de norme pour lesdits blocs, chacune de ces valeurs de norme représentant une mesure de force du signal à l’intérieur d’un bloc correspondant. Une valeur maximale de norme est alors identifiée sur lesdits blocs et un critère de test est appliqué aux valeurs de norme. Si le critère de test n’est pas satisfait, un premier signal indiquant que le segment ne comprend aucun transitoire est émis, et si le critère de test est satisfait, un deuxième signal indiquant que le segment comprend un transitoire est émis. Selon ce mode de réalisation, le critère de test fait intervenir une comparaison de la valeur maximale de norme à une deuxième valeur maximale de norme différente, soumise à une contrainte spécifiée, au sein du segment.
PCT/IB2009/005737 2008-05-30 2009-05-27 Détection de transitoires dans des signaux audio WO2009144564A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009801200286A CN102113050B (zh) 2008-05-30 2009-05-27 音频信号的瞬态检测方法及设备

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/129,913 US8630848B2 (en) 2008-05-30 2008-05-30 Audio signal transient detection
US12/129,913 2008-05-30

Publications (2)

Publication Number Publication Date
WO2009144564A2 WO2009144564A2 (fr) 2009-12-03
WO2009144564A3 true WO2009144564A3 (fr) 2010-01-14

Family

ID=41377658

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2009/005737 WO2009144564A2 (fr) 2008-05-30 2009-05-27 Détection de transitoires dans des signaux audio

Country Status (3)

Country Link
US (8) US8630848B2 (fr)
CN (1) CN102113050B (fr)
WO (1) WO2009144564A2 (fr)

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CN104143341B (zh) * 2013-05-23 2015-10-21 腾讯科技（深圳）有限公司 爆音检测方法和装置
US9923749B2 (en) * 2015-02-02 2018-03-20 Sr Technologies, Inc. Adaptive frequency tracking mechanism for burst transmission reception
EP3324406A1 (fr) 2016-11-17 2018-05-23 Fraunhofer Gesellschaft zur Förderung der Angewand Appareil et procédé destinés à décomposer un signal audio au moyen d'un seuil variable
EP3324407A1 (fr) * 2016-11-17 2018-05-23 Fraunhofer Gesellschaft zur Förderung der Angewand Appareil et procédé de décomposition d'un signal audio en utilisant un rapport comme caractéristique de séparation
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EP3382700A1 (fr) * 2017-03-31 2018-10-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Appareil et procede de post-traitement d'un signal audio à l'aide d'une détection d'emplacements transitoires
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Also Published As

Publication number Publication date
US8214207B2 (en) 2012-07-03
US8630848B2 (en) 2014-01-14
US20120059659A1 (en) 2012-03-08
US9536532B2 (en) 2017-01-03
US9361893B2 (en) 2016-06-07
US8805679B2 (en) 2014-08-12
US9881620B2 (en) 2018-01-30
WO2009144564A2 (fr) 2009-12-03
US20160267915A1 (en) 2016-09-15
US20090299753A1 (en) 2009-12-03
US20140324440A1 (en) 2014-10-30
US20180108360A1 (en) 2018-04-19
CN102113050A (zh) 2011-06-29
US20140100855A1 (en) 2014-04-10
US20110307261A1 (en) 2011-12-15
US20170084279A1 (en) 2017-03-23
CN102113050B (zh) 2013-04-17
US8255208B2 (en) 2012-08-28

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